THS422C - THC / THS Series

Littelfuse Single Shot Relays

The TH series is a solid-state relay and timer combined into one compact, easy-to-use control. When mounted to a metal surface, the TH Series may be used to directly control lamp or heater loads of up to 20A steady, 200A inrush. Its single shot function can perform dispensing and pulse shaping operations. The initiate switch can be a momentary or maintained type of switch. Time delays can be selected from 0.1 - 600 seconds in 4 ranges. The THC Series is used for coin vending applications where fast initiate response is required.

 

Operation (Single Shot)
Input voltage must be applied before and during timing. Upon momentary or maintained closure of the initiate switch (leading edge triggered), the output energizes for a measured interval of time. At the end of the delay, the output de-energizes. Opening or reclosing the initiate switch during timing has no affect on the time delay. The output will energize if the initiate switch is closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and the initiate switch opens. Loss of input voltage resets the time delay and output.
Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) ±15%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Solid state
Output Form NO closed during timing
Output Load Rating (VA) 20A steady state 200A inrush
Minimum Output Load Current (A) 100mA
Output Voltage Drop (V) ≅2.5V at rated current
Time Delay Range 0.5 - 60s externally adjustable
Time Delay Tolerance (%) ≤5%
Reset Time (ms) ≤150ms
Initiate Time (ms) ≤20ms
Repeat Accuracy (%) ±2% or 20ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±10%
Open State Leakage Current (A) ≅5mA @ 230VAC
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Circuitry Encapsulated
Power Consumption ≤2VA
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with one #10 (M5 x 0.8) screw
Operating Temperature -20° to 60°C (-4°F to 140°F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Humidity 95% relative non-condensing
Dimensions 2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)
Weight (lbs/g) ≅3.9oz (111g)
Sample capable No